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114
Manual – MOVI-PLC® advanced DHR41B for EtherNet/IP, Modbus/TCP and PROFINET IO
11
Parameterization via PROFIdrive data record 47
Operating Behavior (PROFINET IO)
11.3.7 PROFIdrive parameter requests
The PROFIdrive parameter channel of SEW inverters is directly mapped in the structure
of data record 47. Parameter access with PROFIdrive services usually takes place ac-
cording to the structure described below. The typical telegram sequence for data record
47 is used. PROFIdrive only defines the two request IDs
Request ID: 0x01request parameter (PROFIdrive)
Request ID: 0x02change parameter (PROFIdrive)
This means there is restricted data access in comparison with the MOVILINK
®
services.
Reading a para-
meter via PROFI-
drive – example
The following tables show an example of the structure of the WRITE.request and
READ.res user data for reading an individual parameter via the MOVILINK
®
parameter
channel.
Sending a parameter request
The table shows the coding of the user data for the WRITE.req service specifying the
PROFINET header. The WRITE.req service is used to transfer the parameter setting re-
quest to the inverter.
TIP
The request ID
0x02 Change Parameter (PROFIdrive)
results in remanent write ac-
cess to the selected parameter. Consequently, the internal flash/EEPROM of the in-
verter is written with each write access. Use the MOVILINK
®
service 'WRITE parame-
ter volatile' if parameters must be written cyclically at short intervals. With this service,
you only alter the parameter values in the RAM of the inverter.
Service:
WRITE.request
Description
Slot_Number
0
Random, (is not evaluated)
Index
47
Index of the data record; constant index 47
Length
10
10 byte user data for parameter request
Byte
Field
Value
Description
0
0x01
Individual reference number for the parameter setting order that is
reflected in the parameter response
1
Request ID
0x01
Request parameter (PROFIdrive)
2
Axis
0x00
Axis number
0 = DHR41B
3
No. of parameters
0x01
1 parameter
4
Attribute
0x10
Access to parameter value
5
No. of elements
0x00
0 = access to direct value, no subelement
6, 7
Parameter Number
0x206C
MOVILINK
®
index 8300 = "Firmware version"
8, 9
Subindex
0x0000
Subindex 0
0
0
I
Содержание DHR41B
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